keillor



1. D. KEILLOR. 1439003' FURNACE.

FILED Nov.18.' 1921.

:i horizontal {"mtition extending across the (':isiils intel sllniteiy oi' vents theretl'irouggh in the 'vicinity of its upper end, said horizontal partition having vents therethrough eoniinunieziting with the lower part ot the casingv inside the seid Vertical portition dempers for Closing sueh vente., e Cold nir inlet at the bottoni of the furnoee, fr told pipe leading from the bottoni of the furnace to the upper hot air ehmnber through the lower hot air Chamber und the bottom of said cosine haring; vents therein for admitting Cold air to 'the lower het air Chamber.

3. In a furnace, the combination with the fire box, of a easing' surrounding the lire box, a horizontal partition extending` across the easing interniedietely of the height of the seme und di riding); the easing; into upper und lower hot air elmrnbers, d` vertical por tition situated between the horizimtal pm'- tit-iou and the. bottom of the casing, and hui'- ing' rents therethrough `in the vicinity of its upper end, said horizontal partition having "rents therethrough communicating with the therein for admitting cold tir to the lower hot air chamber. conduits communieating with the lower portion oi the easing, reg1s- Vters the ends or" said conduits, dempers in seid conduits and hotair pipes leading from the upper part of the casing.

JOSEPH D. KEILLOB. 

